tldr/pages/common/docker-swarm.md

docker swarm

A container orchestration tool. More information: https://docs.docker.com/engine/swarm/.

• Initialize a swarm cluster:

docker swarm init

• Display the token to join a manager or a worker:

docker swarm join-token {{worker|manager}}

• Join a new node to the cluster:

docker swarm join --token {{token}} {{manager_node_url:2377}}

• Remove a worker from the swarm (run inside the worker node):

docker swarm leave

• Display the current CA certificate in PEM format:

docker swarm ca

• Rotate the current CA certificate and display the new certificate:

docker swarm ca --rotate

• Change the valid period for node certificates:

docker swarm update --cert-expiry {{hours}}h{{minutes}}m{{seconds}}s